Insulator-support.



w. T. GODDARD. I INSULATOR SUPPORT- QPPLICATION FILED AUG-25.1915.

Patented Mar. 5, 1918.

2 SHEETSSHEET l/V VE/V TOR fl lkrf 5061674061 W..T. GODDARD, iNSULATOR SUPPORT.

APPLICATION FILED AUG. 25.

- Patented Mar. 5, 1918.

SSHEET 2.

2 vSHEET DH! WW l/VVENTOR hide/521"]? bddanl/ 70135 A TTORNE rs s ATNT ensues,

WALTER T. GUDDABD, OF HAMILTON, QNTARIG, CANADA, ASSIGNOE- T0 THE LOCKE INSULATOR MANUFACTURING GOMPANY, OF VICTOR, NEW YORK, A CORPORA- TION OF NEW YORK.

INSULATOR-SUPPORT.

Specification of Letters Patent.

Patented Mar. 5, 1918.

Application filed August 25, 1915. Serial No. 47,376.

To all whom it may concern."

Be it known that I,-WALTER T. GODDARD, of Hamilton, Province of Ontario, and Dominion of Canada, have invented certain new and useful Improvements in Insulator- Supports; and I do hereby declare the following to be a full, clear, and exactdescription of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the reference-numerals marked thereon.

My invention relates to insulator supports, and has for its chief object to afford a structure that will carry an insulator in such a manner as to impart suliicient flexibility or yieldability to prevent cracking the pores" lain as so frequently caused by the vibration o1? the conductor due to'wind currents, thus materially lengthening the life of the insulator and increasing its practical eliiciency. This I accomplish by mounting the insulator on a pin of wood or other non-metallic or Slightly flexible material, and a further object of the invention resides in so constructing the parts as to prevent burning or digesting the material of the pin. The wooden pins as commonly used in insulator supports must be frequently replaced, owing to their destruction, due to an intense electrostatic field in a moist atmosphere or to surface leakage current passing through the pin to ground, and my invention in a more specific aspect consists in the employment of a! conducting rnember surrounding the pin and cooperating with the insulator so as to inclose the pin in a practically waterproof chamber, and also to conduct the surf-ace leakage current to ground without requiring its passage through the wood pin. Another purpose of the present structure is to maintain the pin on which the insulator is mounted in a constant state of tension, more or less, which gives the required amount of flexibility to the pin, permitting the application of a load to the insulator transversely of the longitudinal axis of the pin and insuring the return of the pin to its normal position after the load is removed, all of which takes the strain oil the insulator and obviates any tendency toward breaking the latter. An additional purpose is to provide for removal of a pin, without changing the position of the insulator, and further to make it possible to tighten the pin from the round while current is on the line. To these and other ends the invention consists in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawings:

Figure 1 is a sectional view of an insulator showing the application of my invention in a preferred embodiment;

Fig. 2 is a side elevation of a slightly different form of construction with the same features embodied;

Fig. 3 is a sectional view on the line 9 3 of Fig. 2;

Fig. 4 is a sectional view on the line 4 -4 of Fig. 3, and

Fig. 5 is a side elevation, partially in section, illustrating a further application of my improvement.

Similar reference numerals throughout the several views indicate the same parts.

l'he invention is susceptible of a variety of different embodiments according to the particular type of insulator with which it is to be used or the circumstances under which it is employed, and embodies generally a sleeve like member or" metal or other con ducting material arranged around the sup porting pin and in contact with the insulator itself, whereby it performs the double function of forming a waterproof inclosure for the pin and of providing a direct path for the surface leakage current to ground around the pin.

A practical and commercial embodii'nent of my invention is shown in Fig. 1, in which the insulator comprises a series of sections A, A, A and A secured together in any convenient manner, as usual in this class of construction. The innermost insulator section A embodies a downwardly extending and outwardly flaring skirt a, and is threaded interiorly at its upper end to receive the upper end of a pin Z) formed oi wood or other similar non-metallic, or fibrous material, characterized by sufiicient flexibility for the purposes of the device. The lower end of the pin 5 is also threaded and receives a thimhle c of metal or some conducting rnaterial and having a flange 0' extending outwardly at its upper end. The thimble 0 is threaded into a sleeve like base d of metal or other conducting material, the upper end of which receives the flange 0, while 0 is a washer of asbestos or other similar compressible substance disposed between the flange c and the shoulder Z) forming a lower edge of the insulator. Thus the lower edge of the insulator rests upon the upper edge of the base (Z, and is in tight engagement therewith when the parts are properly secured, the compression washer 6 serving to efi'ect an equal distribution of the pressure throughout the surface of the upper portion of the base. f designates a filling of any suitable waterproof and insulating compound disposed between the pin Z) and the insulator, and serving to fill completely the inclosure that is formed by the insulator and the base (Z. This results in the formation of a waterproof chamber for the pin 6, and prevents access of moisture to the latter. lVhen the parts are tightened, a tension is exerted throughout the pin by reason of the engagement between the insulator and the base, in which parts the ends of the pin are secured, and when the insulator is subjected to any lateral movement, due to vibration of the conductor, the space between the insulator and the base filled by the compression washer e is sufficient to permit a slight flexing of the pin, enough to obviate any strain on the insulator, while at'the same time permitting the pin to resume its normal position when the abnormal load is removed from the insulator. The base (Z maybe secured in any manner to a support or cross arm 9, as by means of a bolt 9.

In the form of construction shown in Figs. 2 to 4 inclusive, h designates the support on which is mounted the base 2', surrounding the lower end of the pin j, and is is a compression washer arranged between the upper edge of the base and the lower edge of the insulator. Z designates a cap or head threaded on the lower end of the pin y' and rotatably engaged with the base 2'. The cap Z is provided with a peripheral groove Z, and the base 2' has a recess cooperating with said groove and receiving the pin m, which serves to hold the cap in proper relation with the base while at the same time permitting its rotation for tightening the pin. In order to readily effect tightening of the pin, the cap J is provided on its lower surface with a squared portion Z which is accessible from below, and permits tightening the insulator from the ground by means of a pole adapted to engage the squared portion Z and with this form of my invention, a pin can readily be removed from below, by turning the nut Z, and without disturbing the position of the insulator,

while current is on the line.' In Fig. 5, I have shown another arrangementadapted to be used in connection with the usual type of construction employing a wooden pin secured directly to the support or cross arm. In this modification, a designates the sup port, and p is the wooden pin on which the insulator is mounted. g designates a sleevelike metal member resting on the support it and having its upper end arranged to engage the shoulder 1- or lower edge of the insulator, while 8 is the compression washer arranged between the base 9 and the insulater. This affords a simple arrangement that can be readily applied to any existin insulators employing the common type 0 wooden pin.

It will be seen that in the last two forms of the invention, shown in Figs. 2 to 5 inclusive, the structure (litters but slightly from the arrangement of Fig. 1, and affords a substantially air-tight and water-proof inclosure which prevents moisture and dampness from reaching the pin, or forming a moisture laden electro-static field,-which is likely to destroy the fibers of the pin. In all of the forms of my invention, there is afforded a conducting member between the support and the insulator, forming a passage around the pin, for any current resulting from surface leakage which is readil carried to ground without in any way a fecting the composition or the usefulness of the pin. An additional advantage resides in .maintaining the pin constantly.

under tension, which condition imparts to the pin the desirable amount of flexibility that permits it to yield, with the insulator, to-a transverse load, and serves to return the pin to its normal state when the load is removed, and it will be understood that I am not limited by the present description to any of the precise arrangements disclosed, but intend to cover by this application any construction coming within the purpose of the invention and the terms of the claims hereinafter.

I claim as my invention:

1. The combination with an insulator, of a fibrous pin in engagement with its upper end, a conducting sleeve carrying the pin and having a portion extending outwardly from-tho pin and affording a shoulder engaging a lower edge of the insulator, a compression washer between the sleeve and insulator, and a support for the sleeve.

2. "he combination with an insulator, of a fibrous pin threaded into the upper end thereof, a conducting thimble threaded on the lower end of the pin, a conducting sleeve having threaded engagement with said thimble and engaging a lower edge in the insulator, a compression washer between the insulator and sleeve, and insulating fillshouici ezg 3115i a wltamresi115; rmterizl interpnsed in the 332; on: on sad, sneuldmr e be pin mac? insulaqml".

3. lbs combination with a fibmus pin in engagemen' x and therefif, a base 01* cana v. receiving the lower and 07? 1. .1 ing a p LEE? i011 extending autmmii 

